EP2483469A1 - Heat pump laundry dryer machine - Google Patents
Heat pump laundry dryer machineInfo
- Publication number
- EP2483469A1 EP2483469A1 EP10757788A EP10757788A EP2483469A1 EP 2483469 A1 EP2483469 A1 EP 2483469A1 EP 10757788 A EP10757788 A EP 10757788A EP 10757788 A EP10757788 A EP 10757788A EP 2483469 A1 EP2483469 A1 EP 2483469A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- drum
- laundry dryer
- channel
- dryer machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 9
- 238000009833 condensation Methods 0.000 claims abstract description 8
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 description 8
- 238000013021 overheating Methods 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/206—Heat pump arrangements
Definitions
- the present invention relates to the heat pump laundry dryer machine which is prevented from overheating.
- the drying air that removes the moisture of laundry in the drum leaves the moisture in the evaporator and enters into the drum again after passing over the condenser.
- the refrigerant delivered to the condenser from the compressor with increased pressure and temperature enters the evaporator by being constricted in the capillary tube and absorbs heat in the evaporator with the aim of removing moisture from the drying air.
- the process of removing moisture is achieved as a result of the drying air reaching a certain temperature value at the drum outlet and the drying air cycle is completed.
- the operating temperatures of the cooling system rise continuously as a result of the continuous operation of the cooling system and the cooling system conditioning the same drying air during the circulation of the drying air.
- the drying air heated by the condenser is delivered into the drum and the laundry inside the drum is heated by means of this air.
- the air leaving the drum leaves the moisture contained therein by passing over the evaporator.
- the temperature of the drying air coming over the evaporator increases as the laundry inside the drum is heated.
- the increased drying air temperature also causes the temperature of the evaporator (evaporation temperature) to increase.
- Increase of the evaporation temperature increases the condensation temperatures due to configuration of the cooling system and the increased condensation temperature increases the evaporation temperature again. This cycle leads to the problem called "overheating" in the situations when not intervened.
- the drying air circulation temperatures that shift by the overheating effect cause the compressor to operate in an inefficient range and as a result of this the energy consumption of the system increases.
- PCM phase changing material
- the aim of the present invention is the realization of a heat pump laundry dryer machine wherein the overheating problem is prevented and the moisture removing efficiency of the evaporator is increased.
- the heat pump laundry dryer machine realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, comprises one or more receptacles filled with PCM which is disposed in the channel situated between the drum outlet and the evaporator.
- the receptacle is disposed just before the evaporator.
- the receptacle is disposed on the walls of the channel, between the drum outlet and the evaporator, to be parallel to the flow direction of the drying air.
- the receptacle is in ring form and is disposed inside the channel to be in contact with the channel walls. In this situation, the drying air passes through the center of the receptacle.
- the receptacle is in grill form consisting of pipes filled with PCM.
- the drying air passes between pipes.
- both the flow of the drying air can be controlled and also the heat transfer surface area between the drying air and the PCM is increased.
- the compressor is provided to operate more efficiently and in parallel to this energy consumption of the system is provided to be decreased.
- water retention efficiency increases by providing to hold more moisture on the evaporator.
- increasing the moisture removing efficiency of the evaporator results in decreasing the drying cycle time.
- Figure 1 - is the schematic view of a heat pump laundry dryer machine.
- Figure 2 - is the schematic view of detail A in Figure 1 in an embodiment of the present invention.
- Figure 3 - is the schematic view of detail A in Figure 1 in another
- the laundry dryer machine (1 ) of the present invention comprises a drum (2) wherein laundry desired to be dried are placed, a channel (5) with both ends connected to the drum (2) which provides the cycle air to be circulated in a closed cycle, an evaporator (3) disposed on the channel (5) and which provides to remove the moisture from the cycle air leaving the drum (2) by condensation, a condenser (4) providing to heat the
- the laundry dryer machine (1 ) furthermore comprises one or more
- phase changing material PCM
- a material that changes phase preferably at a temperature of around 30 - 50 °C is used as the PCM.
- the compressor (8) also operates and the refrigerant is circulated in the cooling cycle.
- the drying air passes over the evaporator (3) after leaving the drum (2) and while passing over the receptacle (6) situated between the evaporator (3) and the drum (2) outlet, heat transfer is effectuated therebetween the PCM contained in the receptacle (6).
- the drying air leaving the drum (2) at low temperature transfers the heat energy contained therein to the PCM in the receptacle (6).
- the drying air passes over the evaporator (3) and is heated in the condenser (4) to be delivered again into the drum (2) thereby completing a drying air cycle.
- the amount of energy stored on the PCM also increases.
- the temperature of the drying air at the drum (2) outlet having increased during the drying cycle, also increases the temperature of the PCM.
- the increase of temperature continues until reaching the phase changing temperature of the PCM.
- the temperature reaches the phase changing temperature since the temperature of PCM remains constant throughout phase changing, the drying air remains at the same temperature as the PCM even though the drying air temperature at the drum (2) outlet increases in the course of time.
- the phase changing temperature of the PCM and the temperature of the drying air entering the evaporator (3) is equalized. In other words, PCM changes phase and the excess energy contained in the drying air is stored thereon.
- the temperature of the drying air entering the evaporator (3) is decreased. Accordingly, the condensation temperature is provided to be kept at the desired levels by the evaporation temperature not rising above a certain limit value. As a result of this, the overheating problem is prevented.
- the energy stored on the PCM throughout the drying cycle is again discharged to the external environment when the drying cycle ends by the effect of the external ambient temperature thus providing the regeneration of the PCM.
- the relatively colder drying air passing over the evaporator (3) effectuates heat transfer with the PCM and passes over the evaporator (3) relatively hotter and as a result of this, the condensation temperature advances to a hotter point with respect to the initial situation. Accordingly, at the start of the cycle, the temperature of the drying air delivered into the drum (2) for the same time frame increases.
- the receptacle (6) is disposed just before the evaporator (3).
- the drying air leaving the drum (2) is provided to leave some portion of its heat on the PCM before entering the evaporator (3).
- the receptacle (6) containing the PCM therein, is disposed on the walls of the channel (5) situated between the drum (2) outlet and the evaporator (3), in the flow direction of the drying air in the channel (5).
- the receptacle (6) is disposed all around on the inner peripheries of the channel (5) walls ( Figure 2).
- the receptacle (6) is in ring form and is disposed in the channel (5) so as to contact the channel (5) walls from the inside. In this situation, the drying air passes through the center of the receptacle (6).
- the receptacle (6) is in grill form consisting of pipes filled with PCM.
- the receptacle (6) comprises more than one passage (7) between the pipes, through which the drying air flows.
- the flow of the drying air is regulated, furthermore more effective heat transfer is provided to be effectuated between the drying air and the PCM by increasing the heat transfer surface area (Figure 3).
- the drying air leaving the drum (2) is provided to be brought to the desired temperature value before entering the evaporator (3).
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR200907472 | 2009-10-01 | ||
PCT/EP2010/064451 WO2011039251A1 (en) | 2009-10-01 | 2010-09-29 | Heat pump laundry dryer machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2483469A1 true EP2483469A1 (en) | 2012-08-08 |
EP2483469B1 EP2483469B1 (en) | 2016-07-06 |
Family
ID=42941881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10757788.4A Active EP2483469B1 (en) | 2009-10-01 | 2010-09-29 | Heat pump laundry dryer machine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130047456A1 (en) |
EP (1) | EP2483469B1 (en) |
ES (1) | ES2593848T3 (en) |
WO (1) | WO2011039251A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012202665A1 (en) * | 2012-02-21 | 2013-08-22 | BSH Bosch und Siemens Hausgeräte GmbH | Domestic appliance, in particular tumble dryer, comprising a latent heat storage, and method for its operation |
CN103512343B (en) * | 2013-09-17 | 2015-07-15 | 江苏天舒电器有限公司 | Heat pump dryer capable of recycling process air |
DE102014217341B4 (en) * | 2014-08-29 | 2023-02-09 | BSH Hausgeräte GmbH | Latent heat storage for a household appliance |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2627669A (en) * | 1951-11-06 | 1953-02-10 | Gen Motors Corp | Combined drier and room dehumidifier |
US4450929A (en) * | 1980-05-09 | 1984-05-29 | Marrs Ralph E | Acoustic energy systems |
US4628692A (en) * | 1980-09-04 | 1986-12-16 | Pierce John E | Solar energy power system |
US4739620A (en) * | 1980-09-04 | 1988-04-26 | Pierce John E | Solar energy power system |
JPS5838708B2 (en) * | 1981-03-06 | 1983-08-24 | 工業技術院長 | solar heat collector |
US4843837A (en) * | 1986-02-25 | 1989-07-04 | Technology Research Association Of Super Heat Pump Energy Accumulation System | Heat pump system |
US4807696A (en) * | 1987-12-10 | 1989-02-28 | Triangle Research And Development Corp. | Thermal energy storage apparatus using encapsulated phase change material |
US5129236A (en) * | 1990-09-06 | 1992-07-14 | Solomon Fred D | Heat pump system |
US5662161A (en) * | 1995-08-10 | 1997-09-02 | The United States Of America As Represented By The Secretary Of The Navy | Breathing gas cooling and heating device |
IT237262Y1 (en) | 1995-11-03 | 2000-09-05 | Whirlpool Europ S R L | HEAT RECOVERY DEVICE REMOVED BY A POSTO LOAD IN A DRYER OR TOWEL DRIER AND ITS |
DK0999302T3 (en) * | 1998-10-21 | 2003-12-01 | Whirlpool Co | Dryer with a heat pump |
FR2785372B1 (en) * | 1998-11-02 | 2001-01-26 | Armines Ass Pour La Rech Et Le | METHOD AND INSTALLATION FOR DRYING A MASS OF FIBROUS MATERIAL |
US20030131623A1 (en) * | 2001-09-05 | 2003-07-17 | Suppes Galen J. | Heat pump using phase change materials |
JP2004116899A (en) * | 2002-09-26 | 2004-04-15 | Matsushita Electric Ind Co Ltd | Heat pump type drier |
WO2005032322A2 (en) * | 2003-09-29 | 2005-04-14 | Self Propelled Research And Development Specialists, Llc | Heat pump clothes dryer |
ES2314901T3 (en) * | 2005-04-13 | 2009-03-16 | Shaikh, Jim | SELF-HEATING CONNECTOR FOR LIQUIDS AND SELF-HEATING CONTAINER FOR LIQUIDS. |
TR200708913T1 (en) * | 2005-07-01 | 2008-12-22 | Ar�El�K Anon�M ��Rket� | A heat exchanger and a washing machine using this heat exchanger. |
DE102005062940A1 (en) * | 2005-12-29 | 2007-07-05 | BSH Bosch und Siemens Hausgeräte GmbH | A method for drying washing has a heat pump by which circulated air through the washing chamber is dried and heated and an additional heat pump evaporator is arranged to predry the circulated air stream |
US7260934B1 (en) * | 2006-04-05 | 2007-08-28 | John Hamlin Roberts | External combustion engine |
JP2008237496A (en) | 2007-03-27 | 2008-10-09 | Toshiba Corp | Clothes drying machine |
DE102007061520A1 (en) * | 2007-12-20 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Laundry drying apparatus and method of operating the same |
-
2010
- 2010-09-29 US US13/499,682 patent/US20130047456A1/en not_active Abandoned
- 2010-09-29 ES ES10757788.4T patent/ES2593848T3/en active Active
- 2010-09-29 EP EP10757788.4A patent/EP2483469B1/en active Active
- 2010-09-29 WO PCT/EP2010/064451 patent/WO2011039251A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2011039251A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2483469B1 (en) | 2016-07-06 |
ES2593848T3 (en) | 2016-12-13 |
WO2011039251A1 (en) | 2011-04-07 |
US20130047456A1 (en) | 2013-02-28 |
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